The dip stick showing oil before cleaning means oil is there. Check the user manual (if u have) what manufacturer recommends how to check oil as some recommend to warm up the engine a bit n then check the oil.
Secondly make sure ur car is parked on level ground. Third do check both sides of dip stick second time. Standing all night the dip stick can show oil marks on both sides but when u clean n try again it might just show the level on one side of stick.